150+ Best UK Energy Startups & Companies | Best Energy Companies Award 2021

Energy is big business in the UK. We have selected the top 150 Energy companies across the size spectrum to showcase. These startups and companies are all taking different approaches to innovating the Energy industry, that diversity of innovation is what makes the UK so great. 

We selected these startups and companies for exceptional performance in one of these categories:

Innovation

Growth

Management

Societal impact

The best Energy startups and firms in the UK

We have profiled the top 150 Energy startups, companies and firms in the UK. This list is in no particular order, all of the companies showcased here are exceptional companies, well worth following. 

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BP

BP delivers heat, light and mobility products and services to people all around the world.

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Octopus Energy

Octopus Energy builds technology that reduces the cost of energy to improve customer experience.

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CORE POWER (UK) Ltd

Advanced atomic technologies can be a game changer for heavy transport and industry.

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Rolls-Royce

Rolls-Royce is an industrial technology company that provides integrated power and propulsion solutions.

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Addionics

Addionics is creating next-generation batteries through intelligent 3D battery architecture and engineering.

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Bulb

Bulb provides affordable renewable energy for homes and businesses.

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Hometree

Hometree exists to make home ownership simple & sustainable

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BBOXX

BBOXX designs, manufactures, and distributes plug and play solar systems.

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National Grid

National Grid facilitates electricity and gas transmission system and focuses on delivering clean energy.

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Newcleo

Newcleo, the futurable energy.

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Tullow Oil

Tullow Oil is an independent oil and gas, exploration and production group.

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Storm4

Storm4 is a specialist GreenTech recruitment marketplace, connecting organizations with the senior talent to drive their mission.

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Carbon Trust

Carbon Trust is to accelerate the move to a low carbon economy, by working with organisations to reduce carbon emissions now and develop.

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Clim8 Invest

Clim8 Invest provides an app that allows individuals to invest in industries that work towards fighting climate change.

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Lightsource Renewable Energy

Lightsource is a provider of ground and rooftop solar installations in the UK.

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Highview Power

Manufacture Of Electricity Distribution And Control Apparatus

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ev.energy

Smart charging software platform for electric vehicles, to reduce carbon emissions and cost

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Zenobe Energy

Zenobe Energy is the largest independent owner and operator of battery storage in the UK.

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Future Planet Capital

Future Planet is the impact-led, global VC firm built to invest in growth companies from the world's top universities

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Setcoin Group

Setcoin Group is a private equity company makes ESG investments in commercial real estate, green buildings, renewable energy, infrastructure

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Limejump

Limejump is a Technology-Driven Utility: harnessing the power of big data to positively disrupt and transform today’s energy market.

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Globeleq

Globeleq Generation Limited develops, builds, and operates renewable power projects in Africa and the Americas.

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Pavegen

Pavegen is the global leader in harvesting energy and data from footfall.

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Mytrah Energy

Mytrah Energy (India) Limited (MEIL), a wholly owned subsidiary of Guernsey based and AIM/LSE listed MEL in India,

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Moixa Energy Holdings

Pioneer of energy storage, DC micro-grid power and aggregate electricity grid services in the UK

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H2GO Power

H2GO Power develops safe and low-cost hydrogen production and storage technologies.

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Arloid Automation

Arloid is an AI solution that learns to automatically adjust HVAC settings based on changing environmental conditions.

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Piclo

Piclo develop software to make our electricity grids smart, flexible and sustainable.

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Switchee

Data analytics and IoT business serving large social landlords

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Bramble Energy

Bramble Energy is an innovator energy technology company that designs and manufactures high-performance, low-cost, and fuel cell stack

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Moixa Technology

Developer of distributed energy storage, aggregation and smart DC technologies

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bio-bean

bio-bean is a U.K.-based green company that offers its users with processes of recycling and waste management solutions.

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Neptune Energy

Neptune Energy is an independent oil and gas exploration and production company.

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OilX

OilX is a oil sector that provides a global real-time oil supply-demand balance.

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Project Etopia

Project Etopia is a creating more economical and environmental developments through technological advancements.

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Seven Energy

Seven Energy is an indigenous Nigerian oil and gas exploration, development, production and distribution company.

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Open Energi

Open Energi enables public and private sector to commercialize their energy loads, improve their energy management and support their goals.

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ContourGlobal

ContourGlobal develops, acquires, operates, and manages wholesale electric power generation businesses.

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Moltex Energy

Moltex Energy is developing a next generation nuclear reactor that can produce clean electricity

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Lekela Power

Lekela Power (Lekela) is a pan-African renewable energy generation platform

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RHEON LABS

Redefining performance through energy control.

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Voltaware

Voltaware is a start-up electricity monitoring company based in London.

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Powervault

Powervault aims to disrupt the energy storage market by supplying the first plug and play energy storage device

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Flexion Energy

Flexion Energy is a modern utility and energy storage infrastructure specialist, which is bridging the gap between development and finance.

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Zeigo

Zeigo is a climate-tech platform that connects supply and demand of renewable energy across the world

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Phystech Ventures

Phystech Ventures is an early-stage deeptech VC firm with focus on next-gen computing, life sciences, energy, mobility, and space.

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Advizzo

We combine methods from behavioural and data science to deliver a customer engagement software for all utilities.

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Circle Gas

Circle Gas is an oil & natural gas company.

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Hydro Wind Energy

Game changing innovations to transform the 21st century and beyond

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Pushme

BatterySwap Infrastructure-as-a-service

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Arcola Energy

Arcola Energy is a leader in hydrogen and fuel cell integration, specializing in zero-emission solutions for heavy-duty vehicles.

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SEaB Energy

SEaB Energy has patented a micro anaerobic digestion system for onsite and in-building conversion of organics to energy, water, & fertiliser

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Carbon Analytics

A granular asset focused carbon intelligence & offsetting platform for active industrial decarbonisation across the value chain.

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Amarenco

Amarenco is a fast growing, independent Solar PV investment company with a founding executive team that has wide and deep experience in

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Terrabotics

An Earth Observation & Remote Sensing Data Analytics company for more sustainable production and supply of natural resources.

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Electron

Electron is accelerating the energy industry’s transition to Net Zero by making granular, market-based interactions possible.

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Switchd

Switchd is an automate the process of energy switching.

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Onzo

Onzo creates insights from energy data to capitalise on Smart Meter investment

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Carbon Analytics

Carbon Analytics transforms a company's accounting data into a highly visual, actionable carbon footprint analysis.

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4NEW

4NEW is a United Kingdom company that owns and operates Waste to Energy treatment plants.

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Carnot

Carnot is a developer of hydrogen engine used to reduce the fuel consumption and zero CO2 emissions.

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SMAP Energy

A data analytics solutions provider for energy retailers

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eleXsys Energy

eleXsys Energy operates as a cleantech energy company.

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Delonex Energy

Delonex Energy is building a material portfolio of discovered and prospective resources in East and Central Africa – a region of

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Ichthion

Ichthion engaged in Development of cutting-edge technology to restore the ocean environment.

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Solaris Offgrid

Provide sustainable energy in low income communities.

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Metis Labs

Intelligent software, improving the performance of manufacturing processes.

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Cambridge Clean Energy Ltd.

Revolutionizing the way energy is delivered to emerging markets. Clean-Tech firm focused on innovation and distributed energy as a service

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Ecoisme

Ecoisme is your energy saving system combining a utility switch and energy monitoring to reduce your utility bills.

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ChargePoint Services

ChargePoint Services Ltd (CPS) provides integrated electric vehicle charging solutions.

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Enian

Project management software for renewable energy professionals.

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Airex

Airex is a smart ventilation control that builds intelligent air ventilation units using atmospheric sensors and cloud algorithms.

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Quimera Energy Efficiency

Energy Efficiency, ESCO, Energy Saving, Energy Service

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GrowUp Farms

We’re turning food production on its head to make way better food, that doesn’t cost the earth.

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Electric Miles

Intelligent Internet of Energy Charging Platform

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Inhabit

Inhabit is a web platform helping businesses achieve net zero.

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Belltown Power

Belltown Power is an international renewable energy company that develops and operates wind, solar, and hydro projects.

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Fabriq

Fabriq is an IoT platform for energy, resource and smart building data for smart connected spaces

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Bacanora Minerals

Bacanora Minerals Ltd is an explorer and developer of industrial minerals in Mexico with a primary focus on Borates and Llithium.

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MapStand

MapStand web-mapping platform provides oil and gas company asset summaries, upstream datasets, news and activities.

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GridDuck

GridDuck is a cloud-based hardware, dashboard & API enabling control of your clients' energy

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Iduna

Iduna is an innovative car charging scheme.

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Mandulis Energy

Develops renewable energy projects in emerging markets

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Solivus

Solivus designs and creates solar products for the home and bespoke solar solutions for businesses.

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Ventive

Ventive creates healthy internal environments. Pioneers of Passive Ventilation with Heat Recovery

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Rebel Energy

Rebel Energy is a new breed of energy supplier, providing clean energy to households in the UK

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Q2i Group

Blockchain Interoperability - Complex Transactions Monetised - Blockchain Agnostic Platform - Q2iD - ID Control - Q2iPay

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Eelpower

Eelpower is a battery storage developer that operates energy storage solutions.

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So Energy

So Energy make renewable energy accessible to everyone, and fixed rate tariff will always be among the best value around - renewable or not.

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Utility Warehouse

Telecom Plus PLC is a multi-utility supplier based in the United Kingdom.

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Green Hedge

Green Hedge is a leading developer and operator of low carbon electricity generation and storage projects.

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Demand Logic

Demand Logic is an online energy efficiency system that analyzes data from building management systems.

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E24

E24 provides fully integrated end-to-end, modular and inter-connectable renewable energy solutions.

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Huru

HURU allows you to set up your energy, water, broadband, and other services for your home in minutes.

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RheEnergise

RheEnergise is an energy company that transforms pumped hydro technology and boosts its capacity with High-Density Hydro (HDH) technology.

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Plaxica

Plaxica is a technology and licensing company producing next generation biopolymers and platform chemicals from renewable resources.

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SAVORTEX

SAVORTEX is set apart within the marketplace uitising our pioneering and patented techniques

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TechnipFMC

TechnipFMC engages in project management, engineering, and construction for the energy industry.

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Odqa Renewable Energy Technologies

Odqa Renewable Energy Technologies develop next-generation heat transport technology.

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Enviro-Cool (UK) Limited

Enviro-Cool is the developer of V-Tex, a groundbreaking, low energy rapid cooling technology for pre-packed beverages.

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Active Energy Group Plc

Active Energy Group Plc is a supplier of industrial wood chip for Medium-Density Fiberboard (MDF) manufacturing and Biomass.

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Kaluza

Kaluza is an intelligent grid technology company.

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San Leon Energy

San Leon Energy is a specialist oil and gas company with an extensive portfolio of assets across Europe and North Africa.

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Aminex plc

Aminex plc is an Africa-focused oil and gas company with near term production, development and high impact exploration.

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Chrysalix Technologies

Chrysalix Technologies has developing an innovative biomass fractionation process using low-cost ionic liquids.

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40South Energy

40South Energy we have the expertise to turn ocean wave energy into useful work.

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CCell

Transforming the coastal protection industry and protecting beaches by building coral reefs using 100% renewable energy.

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G3 Exploration

G3 Exploration is the largest company involved in the production of Coal Bed Methane gas and its distribution and sale in China.

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Tamar Energy

Tamar Energy is a clean energy company focused on producing energy from organic waste matter.

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Waste2Tricity

Waste2Tricity engages in developing, funding, and supporting energy-from-waste deployment projects in the United Kingdom.

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Angus Energy

Angus Energy provides the development, production, and distribution of hydrocarbons to third parties in the United Kingdom.

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Deciwatt

Deciwatt is a social business focused on bringing instant, affordable and clean energy to households.

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Energy 4 Impact

A non-profit organisation working with local businesses to extend access to energy in Africa.

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Amplio Group

Amplio Group invests in renewable energy, alternative fuels, filtrations, recycling, environmental services and specialty care enterprises.

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ENERGY

ENERGY is an agency that specializes in helping brands to become more powerful by connecting with clients.

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Argus Media group

Argus Media group is a global energy and commodity price reporting agency.

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Urban Wind Assets

Urban Wind Assets built and operating with a few still in the late stages of construction and connection.

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Quadrise Fuels International plc

Quadrise Fuels International plc is the innovator and global licensor of disruptive residual oil technology.

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Gen Community

Gen Community invest in green ethical low carbon projects with positive social impact, and fair returns for investors.

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Geothermal Engineering

Geothermal Engineering is engaged in the development of deep geothermal heat and power projects.

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Fastnet Oil and Gas

Fastnet Oil & Gas is an independent oil and gas exploration company working in Offshore Ireland and Africa.

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Firglas

Firglas provides commercial-scale algae cultivation for food grade products.

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Infrastrata

InfraStrata is engaged in the development and construction of gas storage and associated facilities.

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USIO Energy

USIO Energy are building the energy company of the future, using AI to deliver electricity and gas to perfectly match people's lifestyles.

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Loritus

Loritus defines how HTC can resolve excessive costs, and recover value and revenue from unwanted material.

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Baringa Partners

Baringa Partners LLP is a management consultancy that specialises in the energy, financial services and utilities markets in the UK.

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OilPrice

Oilprice.com is the most popular energy news site in the world.

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EDF Energy

EDF Energy is a producer of low-carbon electricity that has 35 wind farms – including two off-shore.

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Inspirit Energy Holdings

Inspirit Energy Holdings designed to operate as a single, standalone appliance for a building's energy needs.

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Future Earth Energy

A technology agnostic partner for local renewable energy projects .

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Digital Energy Technologies

Digital Energy Technologies delivers network engineering and infrastructure globally.

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hiber

Home energy product installation startup

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CLB Europe

CLB Europe produces the Silicon-Graphene composite Anode Material, SiGrAM, designed for advanced Lithium-ion batteries.

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Green Biofuels

GREEN BIOFUELS is the authorised supplier of an unique renewable diesel fuel GREEN D+.

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The Crowd

The Crowd is a platform for the business community to share ideas and innovations.

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Erin Solar

Erin Solar is a commercial solar panel management company.

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Kiwi Power

Kiwi Power is a leading global energy technology company that is simplifying distributed energy.

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Cluff Natural Resources

Cluff Natural Resources Plc is an AIM-listed natural resources investing company.

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Cerillion

Cloud Charging & Billing Provider

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Signol

Signol develops software which focuses on fuel efficiency by analysing operational data.

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Marex Spectron

Marex Spectron is a broker offering unrivalled breadth of commodity market.

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TrailStone

A group of separate companies, each staffed by energy and finance professionals

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Enviko

Enviko provides sustainable energy solutions to businesses and homeowners.

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Recyclan

Tech Enabled Plastic Recycling Company

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Petrofac

Petrofac is a provider of oilfield services to the international oil and gas industry. It is registered in Jersey, with its main corporate

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Brackenburn

Brackenburn is to exploit naturally occuring bracken to produce biomass fuels, as cost effective alternatives to fossil fuels.

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Junifer Systems

Junifer Systems is a global provider of Customer Information and Billing systems to the utilities industries.

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CoControl

CoControl provides the UK’s first heating control and social metrics system, which is tailored.

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Solarcentury

Solarcentury develops, constructs, owns and operates utility-scale solar and smart technology across Europe, Latin America and Africa.

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UK Power Networks

Distribution Network Operator Covering London, the South East and the East of England

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